Broken DB Links - Call Fails With A TNS
Mar 28, 2012
I've begun experiencing a very odd issue with one instance and all of their their db links. When I'm connected via telnet to the unix server, and I connect:
connect myuser/password via sql plus, I connect fine, and the link works.
but when I connect this way:
connect myuser/password@db.tnsname.entry.com using the TNS name specified, I again connect fine but the link calls fails with a TNS cannot resolve service name issue.
This is an existing instance with existing db links, but I repeat the issue on this machine alone with new links. the fully qualified name is the same name entry I'm using to create the link, both when it succeeds and when it fails. This is an 11g instance and the TNSnames file is in the ASM home.Also, i f I connect
connect sys as sysdba I get success as well. This behavior happens with both private and public database links. I'm not aware of any setting changes within this instance, and I've modified (after backing up) the TNSNames file with values from another that works perfectly well. Connecting via remote sqlplus or other JDBC connections gives the same error. Success connecting locally but failure connecting to DB Links when I'm remote. Connecting to the instance shows no issue.
Another instance on the network? An IP config issue in DNS? We have 100's of servers so it's needle in a haystack time. Can I run some sort of trace to see what it's calling to when it works and when it doesn't? (It selects another db's single table and I've confirmed the target is correct and the data is correct).
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Jan 3, 2013
i want to drop a broken job but it is taking long time why?
i am using below syntax:
begin
dbms_job.broken(job=> 345,FALSE);
commit;
end;
/
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Sep 2, 2013
Send me the M-View broken alert script? as i need to enable M-View broken alert script in my crontab. I need to create a monitoring script that will send an alert when there is any M-View failed in my DB.
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Jul 17, 2013
i want to use more than four db links in my stored procedure to retrieve data from different databases. but it says ORA-02020: too many database links are opened. i also wrote execute immediate to close some links but its not working.
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May 24, 2010
We have two databases A and B, both are 10g Enterprise edition and we have to replicate only one table from A to B. A is the source and B needs a read only copy. The source of A is modified by User through Oracle Forms.
A latency of 1day can be accepted though the lesser the better. The problem is that this company does not approve of DB links in any form or any tool which in the end has to create a DB link.
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Jul 17, 2013
Seemingly a very simple problem, but I can't seem to figure it out. Table below is a table that holds UserId' s and LinkId's.
CREATE TABLE UserLink (UserId NUMBER, LinkId NUMBER );
ALTER TABLE UserLink ADD PRIMARY KEY (UserId, LinkId);
INSERT INTO UserLink VALUES (1, 1);
INSERT INTO UserLink VALUES (1, 2);
INSERT INTO UserLink VALUES (3, 1);
INSERT INTO UserLink VALUES (4, 1);
I'm looking for a query in which I can plug a List of LinkId's that outputs only users that have a relationship with ALL LinkId's provided. In this example you may assume that the List is equal to (1, 2), but you can't make any assumptions about the size of the list, other than size != 0. The query to find users that match ANY of the provided LinkId's is quite simple:
SELECT UserId FROM UserLink
WHERE LinkId IN (1,2)
The correct query should output:
USERID
------
1
And it should work for any size > 0 list of values.
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Apr 1, 2013
Basically, we have 2 procedures in 2 different databases. One of them makes a call to the other over a database link passing an associative array as a parameters.
This has woked fine for many years 9.2.0.8.0 but we are in the process of migrating to 11.2.0.2.0 and have started getting compilation errors.
1 > Create TYPE in Database_1
=====================
CREATE OR REPLACE PACKAGE DB1_Pkg
IS
type x_tab is table of number index by binary_integer;
v_tab x_tab;
END DB1_Pkg;
[code]....
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Sep 7, 2012
How can I determine what views have a dblink hard coded in them? I am talking about a large number of views so bringing up each view's DDL in a GUI data dictionary tool to look is not an option. I tried running the query below unfortunately "text" is a LONG and doesn't allow the use of the "like" statement.
select * from dba_views where text like '%@%' ;
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Nov 29, 2010
the thread title was a bit confusing, couldn't come up with anything short to describe the question. What I am looking for is a query which will put records into groups based on matching values in one of two columns. So if two records have a matching value in column 1 or column 2 they are in the same group. See the example bellow and expected output for a "better" explanation:
--setup
CREATE TABLE foo
(foo_id NUMBER NOT NULL PRIMARY KEY,
record_number NUMBER,
record_value VARCHAR2(1));
[Code]...
--expected output
group# foo_id record_number record_value
1 1 1 A
1 2 1 B
1 3 2 B
1 4 2 C
2 5 3 D
3 6 4 E
3 7 5 E
My initial thought is that is feels a little bit like the sequential seat problem but not quite close enough. I know it could be done iteratively with PL/SQL but I am thinking there must be a way to do it in SQL I am not seeing yet.
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May 16, 2013
I have a view called V_MEDGEN_LISTRADIO but I can't run SELECT * FROM V_MEDGEN_LISTRADIO
ORA-02020: too many database links in useThe cause is that we call in the view 5 tables over dblink and the open_links parameter is set to 4.
What is strange is that when I run this select by adding a where clause then it works!
SELECT * FROM V_MEDGEN_LISTRADIO WHERE SPRR = 3645;
(use of index so all tables are not called ?)
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Jan 25, 2012
I'm currently assessing the design/performance of a Distributed System in which hundreds of Field reps have local Oracle DBs (10.2.0.4) on laptops & have to update a remote database (11.2.0.1) via a PUBLIC database link. Field data (millions of records) collected daily is synched from the local to the remote DB & vise versa through this database link. I have 2 concerns here:
1. Is the database link the best option for such a configuration? (recently field reps have been complaining about the slowness in synchronizing data between local & remote DBs). If not, what other options are available for such processing?
2. I've read a lot about security concerns with using PUBLIC database links, but haven't seen any documents to proof they're a majority security issue. why PUBLIC database links are considered not to be very secure?
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Nov 14, 2011
I am using SQL Developer.I am self-teaching myself PL/SQL. What I am trying accomplish is to run a select query across many database links at runtime and to insert that query onto a local table. So far, I have only gotten as far as querying the database link names. I am stuck at where my variable calls the database link name. It does not recognize the database link name, and I can't quite grasp the reason why. Below is the first part of my script which does retrieves the column values no problem:
001 SET SERVEROUTPUT ON
002 DECLARE
003 db_link_varVARCHAR2(30);
004 source_cursorINTEGER;
005 destination_cursorINTEGER;
006 src_csrINTEGER;
007 dst_csrINTEGER;
008 rundate_varDATE;
009 instance_name_var VARCHAR2(30);
[code]....
If I break the script down to the bare select query, it will query absolutely fine.If I run the script in its entirety, it will not pick up the variable dbl as a dynamic database link. 02019. 00000 - "connection description for remote database not found"
If I comment out line 031 and prevent the looping of querying of database links (which will only fetch the first value of db_link from dba_db_links), the script will complete and I will have a row inserted into my local table.
I am suspecting it's the looping that is incorrect but I understand it is not going to do anything beyond line 059.
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Jul 21, 2011
how to find out what are all the objects referring to particular database links in database?
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Jul 2, 2011
There is a user account called 'BALA' in my database.I want to find out the database links that uses this 'BALA' account.
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Oct 1, 2012
Is it possible to use the Oracle HAIP feature to bond multiple network links between Active and Standby database ?
Does this require a seperate license ?
Basically, I was looking for a solution for bonding the muliple WAN links that we have between the active and Standby database.
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Jul 23, 2013
is there any way to refer a table which is in different schema other than using DB links.
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Oct 14, 2013
A website requires to display consolidated data from databases located in different geographical regions (India, London and New York). The application server for the website is hosted only in one location India. What are the techniques that can be used for faster retrieval of data from all 3 databases?
Note: There is no need of real time data retrieval from different regions; however the user should able to view the updated data at predefined intervals.
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Jun 15, 2013
I know how to use database links in various forms, but I've been trying to think through how the authentication works for a connected user link in 11g. If I create the link like this,
create public database link using 'orcl';
then any user can use the link, provided they have an identical username/password in the two databases. With pre-11g passwords, it was understandable: the password was salted with the username, so the hash of the password would be the same in both databases, and I assumed that the logon through the link used some sort of IDENTIFIED BY VALUES mechanism. But in 11g, the salt will different in the two databases. So the hash will be different. And of course Oracle never stores the actual password. So I don't see how the authentication works.
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Dec 19, 2011
I would like to know if we can insert 300 million records into an oracle table using a database link. The target table is inproduction and the source table is in development on different servers.The target table will be empty and have its indexes disabled before the insert. if this can be accomplished in less than 1 hour.
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Jun 16, 2013
I know how to use database links in various forms, but I've been trying to think through how the authentication works for a connected user link in 11g. If I create the link like this,create public database link using 'orcl';then any user can use the link, provided they have an identical username/password in the two databases. With pre-11g passwords, it was understandable: the password was salted with the username, so the hash of the password would be the same in both databases, and I assumed that the logon through the link used some sort of IDENTIFIED BY VALUES mechanism. But in 11g, the salt will different in the two databases. So the hash will be different. And of course Oracle never stores the actual password. So I don't see how the authentication works.
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Mar 25, 2013
Application which I`m creating would work only inside domain. In the report I would like to have a link to files that stored outside from oracle server ( so apex cannot see the file but knows the absolute path to the file ).
And when I click in the report on the link to the file I would like to have this file opened in the application controlled from my OS ( naturally if I have rights to the path specified given from domain level).
I have been trying with column link ( a href, file:// ) and none of them works. I want to avoid APEX from copying files to local path or opening using java or creating directory.
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May 17, 2010
I want to revoke some privileges (given from user, say A, on table TABLE to user B) with SYS, and i've got an error : It says that I can't revoke a privilege that I didn't give.
In DBA_TAB_PRIVS, there's no information about that : I can't know who gives the privilege (when I try to perform the REVOKE statment with OWNER, GRANTOR, I've got the same error).
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Sep 22, 2008
I'm trying to configure and run replication. I have two PC's running as Oracle servers, having both of them the same configuration:
Windows XP Pro
Oracle 11g Enterprise Edition
First server is called Oracle1, and database name is orcl1. Second server name is Oracle2 and database name is orcl2..I'm running the following
SYSTEM/oracle1
alter system set global_names=true;
alter system set job_queue_processes=100;
ALTER DATABASE RENAME global_name TO orcl1.world;
SYSTEM/oracle2
alter system set global_names=true;
alter system set job_queue_processes=100;
ALTER DATABASE RENAME global_name TO orcl2.world;
SYSTEM/oracle1
CREATE PUBLIC DATABASE LINK orcl2.world USING '(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(Host=Oracle2)(Port=1521)))(CONNECT_DATA=(SID=orcl2.world)))';
CREATE USER repadmin IDENTIFIED BY clave
DEFAULT TABLESPACE users
TEMPORARY TABLESPACE temp
QUOTA UNLIMITED ON users;
[code]...
It looks like database orcl1 can't access orcl2.
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Jul 9, 2013
I am not able to register the database with 12cR1 CRS . Gettting the error as follows,
bash-3.2$ /opt/oracle/product/11.2.0/db3/bin/srvctl add database -d 11gr2tstdb -o /opt/oracle/product/11.2.0/db3PRCR-1006 : Failed to add resource ora.nishtest.db for nishtestPRCD-1184 : Failed to upgrade configuration of database type to version 11.2.0.3.0PRCR-1071 : Failed to register or update resource type ora.database.typeCRS-0245: User doesn't have enough privilege to perform the operation
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Oct 8, 2011
We are into pre-production stage for Oracle RAC implementation. I have setup Oracle 10g 2 node RAC, currently i have been experiencing TAF failures for TOAD client. TOAD client session simply disconnects rather than failing over to the next node, It is noticed that TAF succesfully works for SQL client from the same client machine. Attached herewith are following from both nodes :
1) Listener file node1, node2
2) TNS file node1, node2
3) TNS file client
4) Output of show parameter listener from node1, node2
5) Output of lsnrctl services node1, node2
Summary of environment :
OS - Windows 2003 entp edition sp2, 32 bit
Database server - 10.2.0.5.0
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Jan 20, 2012
I have a large 10G database, with records being inserted almost constantly. In order to "UPDATE" records, I need to be able to DELETE the old record and INSERT the new record (even while records are being inserted into the table). It appears that DELETES won't work while records are being inserted (1.5 million records per day). Is there a way around this (which I'm assuming at this point is a contention issue)? The INSERT uses the NOPARALLEL hint; no hints on the DELETE.
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Jul 28, 2013
on a windows 2008 machine that has the Oracle instant client 11_1 installed (11.01.00.06) i am calling SQLDriverConnect in the following way:
std::string str = "Driver={Oracle in instantclient11_1};Dbq=//10.10.101.66:1521/orcl;;Uid=myUser;pwd=a;b";
odbcRc = SQLDriverConnect(hdbc, NULL, (SQLTCHAR*)str.c_str(), str.size(), (SQLTCHAR*)szConnStrOut, 1024, &cbConnStrOut, SQL_DRIVER_NOPROMPT)) == SQL_ERROR);
as long as the password contains no special chars (namely semicolon) it works fine. but when I try to use special chars in the password It stops working, with an invalid username/password error.
State: 28000 Native error: 1017 Message: [Oracle][ODBC][Ora]ORA-01017: invalid username/password; logon denied
i tried different variations of adding " (\") over the password, over the entire pwd=a;b or braces { but nothing seems to work.the thing is that using ODBC works! what I did was: open ODBC, go to System DSN tab, add "Oracle in instantclient11_1", then fill the following information:
Data source name: Anything
TNS Service Name: //10.10.101.66:1521/orcl
User ID: myUser
then i press test connection, enter the password "a;b" and it works!
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Jun 11, 2009
I want to alter a very large table.
ALTER TABLE MYTABLE ADD
(
ENTRY_TSTMP DATE DEFAULT SYSDATE NOT NULL
)
My table is very large and I am getting an error saying I am out of undo space.
The dba says the undo space is as big as the table.
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Apr 29, 2011
[URL]......
The oracle documents mentions this file
$ORACLE_HOME/.patch_storage/<patch-id_timestamp>/restore.sh
But what I find in that directory is
$ORACLE_HOME/.patch_storage/<patch-id_timestamp>/rolback.sh
Where is the restore.sh file that the document is talking about.
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Mar 24, 2011
I have a pl/sql package called advisory_form. It has 3 procs. First one asks for the term it calls another web form to get it then asks for student id. Post id to second procedure and web form shows students course information with a cursor also three empty items. When advisor fills this items for each course the data should be inserted into a table.I try to do this with a loop but it didn't work properly. The data which I get from cursor is inserted properyl but when it comes to filled text boxes and select list it does not work. Some data is lost. I am adding screenshot of my web form and the data inserted to table and of course my package code.
This is what I want to insert.
CREATE OR REPLACE package body advisory_form is
countc number;
pidm number;
procedure p_sel_tid(term in term.term_code%type default null) is
hold_term varchar2(30);
begin
if not tmain.F_Vuser(pidm) then return;
end if;
if term is null then
hold_term := tmain.f_getp(pidm, 'term');
else
tmain.p_setp(pidm, 'term', term);
hold_term := term;
end if;
if hold_term is null then
bmain.p_fsterm(calling_proc_name => 'advisory_form.p_sel_tid');
return;
end if;
tmain.P_Open('advisory_form.p_sel_tid');
tmain.P_Disp('advisory_form.p_sel_tid');
[code].....
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